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21238 Panarea (1995 WV7)
Classification: Main-belt Asteroid          SPK-ID: 2021238
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1085049744808074 2.0009e-08  
a 2.542139367916739 8.194e-09 au
q 2.266304600674277 5.22e-08 au
i 11.45103256844781 8.2087e-07 deg
node 73.72203488976307 4.704e-06 deg
peri 31.26517765462834 6.5208e-06 deg
M 41.48565489249277 6.3955e-06 deg
tp 2459029.894546035274
(2020-Jun-29.39454604)
2.6117e-05 TDB
period 1480.462670445046
4.05
7.1579e-06
1.96e-08
d
yr
n .243167225480788 1.1757e-09 deg/d
Q 2.8179741351592 9.0831e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2453  
   data-arc span      10710 days (29.32 yr)  
   first obs. used      1991-11-13  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43353  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:42:06  

Additional Information
 Earth MOID = 1.29038 au 
 Jupiter MOID = 2.36672 au 
 T_jup = 3.409 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2   n/a MPO502325  
diameter diameter 5.221 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.373   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21238 Panarea           Discovered 1995 Nov. 28 by T. Kobayashi at Oizumi.
Panarea is a volcanic island placed in the south of Italy. The V-type spectrum for this object, which is located far from Vesta, suggests that it may be a new example of a basaltic achondrite asteroid having no connection to Vesta. Name suggested by R. P. Binzel, S. Foglia and G. Masi.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111012/MPCPages.arcLast Updated: 2011-10-13

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Alternate Designations
 1995 WV7 = 1991 VE16 = 1992 AL6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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